In the intervening years, relations between the Low Countries and the Spanish crown that ruled them had deteriorated into outright revolt — the germ of the decades-long struggle that would result in Dutch independence.

Haarlem had initially tried to keep its head down in the conflict, but had declared against Spain in 1572. That brought it into the sights of a vengeful Spanish army that greatly outnumbered Haarlem’s 4,000 defenders. Spurning any talk of compromise or capitulation, city governor Ripperda rallied his garrison and held out against the Spanish siege throughout the winter and spring.

Ripperda was beheaded with a lieutenant a few days later, but in winning the battle, Spain had suffered a setback in the war: besides the seven-month delay, other Calvinist strongholds took heart from the effective resistance and got a lot less cowed by the royal army.

While this day’s martyrdom made “Ripperda” a fixture in Haarlem place names, and despite a somewhat illustrious family tree that also includes a signatory of the Peace of Munster and a fascinatingly disreputable 18th century politician, actual Ripperdas are apparently hard to find in present-day Holland. According to American Tom Ripperda, who runs the family site ripperda.org, the name lives on only in the U.S. and Germany.

“In the 1830’s the last of the Dutch Ripperdas died,” Ripperda told me. “There are no Ripperdas in the Netherlands since they moved to Germany (about 200 or so) and on to America (about 600 or so).”

Instead of Peter Hasselaer, a young officer who had displayed remarkable bravery throughout the siege, the Spaniards by mistake arrested his cousin Nicholas. The prisoner was suffering himself to be led away to the inevitable scaffold without remonstrance, when Peter Hasselaer pushed his way violently through the ranks of the captors. “If you want Ensign Hasselaer, I am the man. Let this innocent person depart,” he cried. Before the sun set his head had fallen.